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ISO 1136:2015

Wool — Determination of mean diameter of fibres — Air permeability method

Mar 3, 2015

General information

90.20     Oct 15, 2025

ISO

ISO/TC 38/SC 23

International Standard

59.060.10  

English   French  

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Scope

ISO 1136:2015 specifies a method for the determination of the mean diameter of wool fibres, using an apparatus which passes a current of air through a bundle of fibres.
This International Standard is applicable to clean, unmedullated wool fibres dispersed in a uniform, open state. It provides a method particularly suitable for combed slivers. The dichloromethane extractable matter content of the specimen must not exceed 1,0 %. It is applicable to oil-combed slivers after cleaning with an organic solvent.
The method described in this International Standard is less accurate for lambswool and for wool which is appreciably medullated (see Annex D) and heavily dyed wool.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 1136:1976

NOW

PUBLISHED
ISO 1136:2015
90.20 Standard under periodical review
Oct 15, 2025

National adoptions

SRPS ISO 1136:2019  
ISS

Wool — Determination of mean diameter of fibres — Air permeability method

90.20   Standard under periodical review

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